Self-study
The difference between manners and morals is that the former are necessarily social in nature whereas the latter are not necessarily social in nature. ██ ███ █████ ██ █████████ ██ ███ █████ ████ ███ ██ ██████
Summary
Morals and manners are different: manners are necessarily social in nature, whereas morals are not necessarily social in nature. Therefore, according to the stimulus, the rules of etiquette do not apply when someone is alone.
Strongly Supported Conclusions
If a situation involves etiquette, then that situation involves manners.
If a situation is social, then a person in that situation cannot be alone.
There are some situations involving morality that are not social in nature.
17.
The statements above, if true, ████ ████████ ███████ █████ ███ ██ ███ █████████ ███████████
a
One could be ███████ ███████ ████ ██████ ██████ ███ █████ ██████ ███ █████
This answer is strongly supported. We know that morals are not necessarily social in nature, meaning there are some situations involving morality that do not involve other people. Therefore, someone could act immorally and not affect (or harm) another person.
b
No immoral act █████ ██ █ █████████ ██ ███ █████ ██ ██████████
This answer is unsupported. The stimulus doesn't exclude an overlap between morality and manners. There could be some situations that involve both.
c
The rules of ████████ █████ ████ ████ ███ ██ ██████
This answer is unsupported. We know from the stimulus that morals are not necessarily social in nature. This does not mean that there are no situations involving morals that are social. It only means that a social context is not required for morals.
d
It is more █████████ ██ ██ █████ ████ ██ ████ ████ ████████
This answer is unsupported. The author never makes a value judgement about whether morals or manners are more important.
e
What is social ██ ██████ █████ ███ ██ █ ██████ ██ █████████
This answer is unsupported, for the same reason as (C). We know from the stimulus that morals are not necessarily social in nature. In other words, a social situation is not necessary for morals to apply. That doesn't mean it's impossible for morals to apply in a social situation.